The Properties Of Stable Line Nuclei Far From ? Are Studied By Equivalent DBHF Method

The ground state properties of atomic nuclei have invariably been one of the most fundamental research questions in the field of nuclear physics.Nucleus properties away from the?-stability line is a hot issue among them.This type of nucleus is obviously different from stable nuclei and is full of uncertainties and unknowns.Constantly attracting people to in-depth research.The equivalent DBHF method starts directly from the microscopic nucleon-nucleon interaction,and there is no free artificial tunable paramete that is,the coupling constant is no longer a constant,but depends on its various density points,and the theoretical validity is stronger.The results are more convincing.This paper uses the equivalent DBHF method to systematically research the properties of proton-rich nuclei and heavy nuclei.The proton-rich nuclei select S,P,Si isotopic chains and ¹⁰⁰Sn isonuclear with N=50 and the heavy nuclei select the six groups of isotopic chains Bi,Po,At,Rn,Fr,and Ra.The theoretical calculation results show that the description of the average binding energy per particle and the root mean square radius of charge of the two kinds of nuclei is beyond compare,which is in line with the expected effect.The proton separation energy of proton rich nuclei and neutron separation energy of heavy nuclei are in good agreement with the authoritative evaluation data.The S,P,and Si isotope chains are in the central position,and the proton density is greater than the neutron density,while the proton-rich nuclei such as ¹⁰⁰Sn with N=50 are similar to heavy nuclei,and the neutron density in the central position is greater than the proton density.Further explore the proton density distribution of S,P,and Si isotopic chains,and calculate the proton skin thickness.The proton skin thickness of ^26-29S,^24-27P,and ^22-24Si is between 0.2-0.5fm,and these proton-rich nuclei The proton density distribution tail drags very long,indicating that^26-29S,^24-27P,and ^22-24Si should be proton halo nuclei.The number of neutrons decreases,the thickness of the proton skin of the nucleus increases,and the proton density distribution tail drags longer.The nucleus at the proton drip line may be a proton halo nucleus.Regarding spin-orbit splitting,the S orbital cannot be split,and the energy of P,D,F,and H orbital splitting is gradually increasing,2P is higher than1P,2D is higher than 1D,and the calculation results conform to the theoretical description.The contribution of the rearrangement term will improve the description of the average binding energy of each particle and significantly increase the root mean square radius of the charge.The tail of the nucleon density distribution curve is obviously extended outwards,that is,the range of neutrons and protons appearing becomes larger,that is,the corresponding radius is enlarged.The contribution of?meson can increase the force between nucleons.In terms of the root mean square radius of charge,the effect on heavy nuclei is greater than that of proton-rich nuclei.The overall effect is very small,which is qualitatively in line with the experimental results.The condition of fitting curve has little influence on the calculation results,that is,the contribution of the?meson has no substantial relationship with the condition of the fitted curve.This is inseparable from the small contribution of?meson as an isospin vector meson.From the calculation and analysis results,The ground state properties of abundant protons and heavy nuclei are well described,which indicates that this method can be extended to the study of nuclear properties far away from the?-stability line.